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Photosynthesis_ Light and Dark Reactions MCQs for Competitive Exams

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Photosynthesis_ Light and Dark Reactions MCQs for Competitive Exams

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Topic Notes: Photosynthesis_ Light and Dark Reactions

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Photosynthesis_ Light and Dark Reactions MCQs in Biology are useful for candidates who need targeted practice for CSS, PMS, FPSC, PPSC, NTS, entry tests, and other competitive exams in Pakistan. This topic page is designed for quick revision, repeated practice, and exam-focused preparation.

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11
What is the biological process by which plants synthesize their own food?
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12
Can artificial light sources effectively drive the process of photosynthesis in plants?
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13
How is the number of oxygen molecules produced per quantum of light absorbed during photosynthesis defined?
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14
Which gas is utilized by plants as a primary reactant during the process of photosynthesis?
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15
According to C.B. van Niel's observations on photosynthesis, what is the source of the oxygen evolved by higher plants?
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16
Which specific color of light is considered most effective for driving the process of photosynthesis?
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17
What is the primary function of photosystem I in terms of redox potential generation?
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18
When a chlorophyll molecule absorbs light energy, it transitions from its ground state to an excited state. What is the specific term for this initial activated state?
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19
Which portion of the visible light spectrum is most effective for driving the process of photosynthesis?
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20
What is the basis for the naming convention of Photosystem I (PS-I) and Photosystem II (PS-II)?
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